Abstract
Background/Objectives: Cloud computing could be considered of vital paradigms in IT which allows services to be delivered to the users via the internet on demand and on pay as you go basis. The growing demand on cloud computing environments increasing the number of datacenters which in turn increase the amount of power consumption in datacenters along with cooling equipment. Load balancing is considered a major challenge affecting in cloud performance Methods: An existing problem is how to allocate Virtual Machines (VMs) to Physical Machines (PMs) or hosts. This process is called VM placement. An algorithm is proposed that can reduce power consumption. Findings: The proposed algorithm assigns VMs onto PMs based on first fit decreasing algorithm and improves an existed one through reducing power consumption by turning-off some under load hosts if available and migrating their VMs to other active hosts. Application: The presented approach could decrease significantly energy consumption in comparison with the existing one through migrating VMs from underload hosts and turns them off. Keywords: Adaptively, Authoring Tool, E-learning, Selection Criteria
Highlights
Rapid advancement in information technology and its tremendous impact on learning fields and combining IT with theories of education creates a new and interdisciplinary field called “Electronic Learning” (E-learning); such a field that while approximating ideas of educational scientists with IT and computer scholars has brought an appropriate basis for quality improvement in educational environments through utilizing advantages of technology and matching it with personal characteristics and strengths of learners
Noticing the high number of internet users globally and even in developing countries, especially Asian countries having high number of internet users, such as Iran with 37 Millions of internet users as of 2017 (Report on national newspaper, Donyay-e-Eghtesad, dated 7th March 2017) and developing knowledge services in universities and placing E-learning development in long-term plans along with serious investment in this field shows the importance of E-learning industry
A Group Comparison of E-learning Authoring Tools in Educational Production and Management the importance of authoring tools regarding their key role in educational content authoring is inevitable
Summary
Rapid advancement in information technology and its tremendous impact on learning fields and combining IT with theories of education creates a new and interdisciplinary field called “Electronic Learning” (E-learning); such a field that while approximating ideas of educational scientists with IT and computer scholars has brought an appropriate basis for quality improvement in educational environments through utilizing advantages of technology and matching it with personal characteristics and strengths of learners. A Group Comparison of E-learning Authoring Tools in Educational Production and Management the importance of authoring tools regarding their key role in educational content authoring is inevitable These tools were present since the time of emergence of computer based trainings and have been used since the early years of 1990s for creating multimedia CDs1,2. Ending years of 1990s, due to empowering the role of internet in distance learning, main market players started to provide educational content authoring tools in high volume files and in special formats through internet[3,6]. With the rapid advancement of technology and to overcome the issues related to these kind of special formats, a new generation of authoring tools in E-learning emerged which have been designed especially for content authoring in E-learning. It should be kept in mind that surely presence of these kinds of criterions is not enough on its own, because what is led to increase understanding and facilitate decision making for education industry owners is comparative and consensus analysis of advantages and disadvantages of these tools and comparing weaknesses and strengths of them which so far, a few number of studies has been done in this area
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